Click on the third or sixth rank to set the en passant target square.

Book: 10 / 893

# move proof disproof
1 c5 549 10
2 Qa4 32 10
3 Qf3 32 11
4 Qb3 29 11
5 g4 10 11
6 Qg4 4 11
7 Qc2 22 12
8 Qh5 22 13
9 a3 12 22
10 b3 12 22
11 f3 12 22
12 a4 12 22
13 b4 12 22
14 f4 12 22
15 Rh2 12 22
16 Qe2 12 22
17 Ke2 12 22
18 Nf3 10 22
19 Na3 9 22
20 Nc3 9 22
21 Kf1 9 22
22 d4 8 22
23 g3 8 22
24 Ne2 8 22
25 d3 4 22
26 e4 16 23
27 h4 4 28